Intersystem crossing of single pentacene molecules in Shpol'skii matrices
| Autor: | Michel Orrit, Marzena Banasiewicz, J. Dresner, Bolesław Kozankiewicz |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
education.field_of_study
Chemistry Population Analytical chemistry General Physics and Astronomy Atmospheric temperature range Photochemistry Fluorescence Pentacene Fluorescence intensity chemistry.chemical_compound Intersystem crossing Yield (chemistry) Molecule Physical and Theoretical Chemistry education |
| Zdroj: | Chemical Physics Letters. 343:71-76 |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/s0009-2614(01)00674-1 |
| Popis: | We have measured the fluorescence decays of pentacene (Pc) dispersed in Shpol'skii matrices of n-heptane, n-tetradecane and n-hexadecane in the temperature range 1.7–200 K. In all of these matrices the decay times were about 25 ns at 1.7 K and shortened to less than 15 ns at high temperatures. This result suggests a low value of the intersystem crossing (ISC), S1→T1, yield at 1.7 K. To check this hypothesis we studied the fluorescence intensity auto-correlation decays of single Pc molecules in n-tetradecane at 1.7 K. The analysis led to a value of the triplet population yield of about 1.5%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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